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Merge pull request #1489 from samnad/master

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Add Brand String method to CPU.cs
This commit is contained in:
Quajak 2020-09-30 15:46:48 +02:00 committed by GitHub
commit 1dd5e4ecb1
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2 changed files with 78 additions and 7 deletions
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8
Tests/Kernels/ProcessorTests/Kernel.cs
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@ -36,6 +36,14 @@ namespace ProcessorTests
}
}
public void TestBrandStringBlank()
{
string brandString = CPU.GetCPUBrandString();
mDebugger.Send("Brand String: " + brandString);
bool isBrandStringBlank = string.IsNullOrWhiteSpace(brandString);
Assert.IsFalse(isBrandStringBlank, "Processor brand string is blank.");
}
public void TestVendorNameIsNotBlank()
{
string vendorName = CPU.GetCPUVendorName();

77
source/Cosmos.Core/CPU.cs
View file

@ -110,6 +110,8 @@ namespace Cosmos.Core
return xResult;
}
/// <summary>
/// Get CPU vendor name.
/// </summary>
@ -179,15 +181,15 @@ namespace Cosmos.Core
{
ReadCPUID(0x80000002 + i, ref eax, ref ebx, ref ecx, ref edx);
s += (char)(ebx % 256);
s += (char)((ebx >> 8) % 256);
s += (char)((ebx>> 16) % 256);
s += (char)((ebx >> 24) % 256);
s += (char)((ebx >> 8) % 256);
s += (char)((ebx >> 16) % 256);
s += (char)((ebx >> 24) % 256);
s += (char)(edx % 256);
s += (char)((edx >> 8) % 256);
s += (char)((edx >> 16) % 256);
s += (char)((edx >> 24) % 256);
s += (char)((edx >> 8) % 256);
s += (char)((edx >> 16) % 256);
s += (char)((edx >> 24) % 256);
s += (char)(ecx % 256);
s += (char)((ecx >> 8) % 256);
s += (char)((ecx >> 8) % 256);
s += (char)((ecx >> 16) % 256);
s += (char)((ecx >> 24) % 256);
}
@ -247,6 +249,67 @@ namespace Cosmos.Core
throw new NotSupportedException();
}
/// <summary>
/// Get CPU cycle speed.
/// </summary>
/// <returns>long value.</returns>
/// <exception cref="NotImplementedException">Thrown on fatal error, contact support.</exception>
/// <exception cref="NotSupportedException">Thrown if can not read CPU ID.</exception>
public static string GetCPUBrandString()
{
if (CanReadCPUID() != 0)
{
// See https://c9x.me/x86/html/file_module_x86_id_45.html
int eax = 0;
int ebx = 0;
int ecx = 0;
int edx = 0;
int[] s = new int[64];
string rs = "";
for (uint i = 0; i < 3; i++)
{
ReadCPUID(0x80000002 + i, ref eax, ref ebx, ref ecx, ref edx);
s[(i * 16) + 0] = (eax % 256);
s[(i * 16) + 1] = ((eax >> 8) % 256);
s[(i * 16) + 2] = ((eax >> 16) % 256);
s[(i * 16) + 3] = ((eax >> 24) % 256);
s[(i * 16) + 4] = (ebx % 256);
s[(i * 16) + 5] = ((ebx >> 8) % 256);
s[(i * 16) + 6] = ((ebx >> 16) % 256);
s[(i * 16) + 7] = ((ebx >> 24) % 256);
s[(i * 16) + 8] = (ecx % 256);
s[(i * 16) + 9] = ((ecx >> 8) % 256);
s[(i * 16) + 10] = ((ecx >> 16) % 256);
s[(i * 16) + 11] = ((ecx >> 24) % 256);
s[(i * 16) + 12] = (edx % 256);
s[(i * 16) + 13] = ((edx >> 8) % 256);
s[(i * 16) + 14] = ((edx >> 16) % 256);
s[(i * 16) + 15] = ((edx >> 24) % 256);
}
for (int i = 0; i < s.Length; i++)
{
if (s[i] == 0x00)
{
continue;
}
rs += (char)s[i];
}
if (!(rs == ""))
{
return rs;
} else
{
throw new NotSupportedException();
}
}
throw new NotSupportedException();
}
/// <summary>
/// Check if can read CPU ID. Plugged.
/// </summary>